Window screen



l8 R 0% H DEA m M 7/ r, 7 F

March 31, 1931.

Patented Mar. 31, 1931 LEWIS F. KOCH, OF JOHNSON CITY, NESSEE WINDOW sonnniv Application filed January 21, 1930. Serial in). 422,265.

My invention relates to window screens and more particularly to that typeembodying a pair of slidably connected screen sections.

An object of the present invention is to provide a screen wherein the two sections are connected together so as to have free slidable movement, thus permitting the screen to be adjusted with facility and ease.

A further object of'the invention is to provide a screen having a fly exit through which the novel combination of elements, construetions and arrangements of parts and operations to be hereinafter more fully described,

claimed and illustrated in the accompanying drawings, wherein:

proved screen in collapsed position;

Fig. 2 is a similar view showing the screen in extended position;

Fig. 3 is an enlarged vertical sectional View 39 of the screen in position in a window frame;

and

Fig. 4 is a fragmentary edge view of the screen in the extended position.

Referring to the invention in detail a pair of rectangular frames or sections 5' and 6, preferably constructed from wood, is provided. As disclosed in Fig. 3 the upper and lower rails of the section are each provided with a pair of parallel grooves 7 upon their inner faces and which extend the entire length of these rails. A plate 8 is secured upon the inner face of each of the upper and lower rails of the section 5 and has its longitudinal edges overlying the grooves 7 V Cooperating with the plate 8 in slida oly connecting the two sections together are guides 9 and 10 which are secured to the inner face of the upper and lower rails of the section 6. The guide 9 is in the form of a Figure 1 is a front elevation of myv im narrow longitudinal strip of metal which is secured to the upper end of oneof the verticai rails of the sections 6 and is formed with oppositely disposed channel-shaped members which embrace the edges of the plate 8 attached to the upper rail of the'section 6.

The guide lO is in the formof a longitudlnal strip of sheet metal which extends the entire length of the lower rail of the section 6 and has its edges formed with oppositely curved channel-shaped members 11 which embrace the plate 8 of the lower sash rail of the section 5.

As anau'xiliary means for holding the two sections against lateral separation an inverted L-shaped bracket 12 is attached to the upper end of one of the vertical rails of the sash section 6 and has its horizontal leg eiztended over the upper edges of the upper rails of the two sections and terminates in a depending flanged?) which overlies the outer face of the upper rail of the side section 5.

'A sheet of reticulated material 14 is secured to each of the frame sections and in 7 order to provide for the exit of flies the upper edge of each sheet of reticulated material isspaced from the inner face of the upper rail of each sash section; A block 15 is se cured to the inner face of each of these upper rails and to which the. reticulated material is secured. As it is the-natural trait of'flies to seek'the light they will crawl upwardly over the reticulated sheet and pass to'the outside between the upper rail of'the' screen sections and upper edges of the reticulated sheets. In practice the outer faces of these rails may be painted black so that flies from the outside will not seek entrance. It will alsobe observed that the fly exits are directly beneath the upper cross bar of the window frame. for fiies onthe outside to accidentally fallwithin the fly exits.

'VVhile the construction of the-fly exit is Thus it will be'impossible disclosed in connection with my improved adjustablescreen it will be manifest that permanent window screensand screen doors may beconstructed to embody the fly exit.

A handle 16 is attached to each of the screen sections for the purpose of moving the screen sections relative to each other.

I claim:

1. In a window screen a pair of rectangular frame sections having an upper rail of less thickness than the side rails, a sheet of reticulated material secured to said frames and having its upper end spaced from the upper rails thereof to provide a fly eXit which when the screen is in place within a window frame is disposed directly beneath the upper sill of the frame so that flies from the outside cannot accidently fall into the eXit, the upper and lower rails of one section having a pair of spaced longitudinal grooves formed therein, a substantially flat elongated plate secured to each of said rails between said grooves and having its longitudinal edges overlying said grooves, and members attached to the corresponding rails of the other section and having oppositely curved channel members formed with the edges thereof which receive the longitudinal edges of said plates in sliding engagement, the free edges of said channel mem ers being adapted to ride in said grooves.

2. In a window screen a pair of screen sections, the parallel rails of one section having spaced longitudinally extending parallel grooves therein, a substantially flat plate secured to each of such parallel rails between said grooves with its longitudinal edges overlying the grooves of the rail to which it is attached, and members attached to the corresponding rails of the other section and having oppositely curved channel shaped members which slidably embrace the longitudinal edges of the plates, the edges of said channel members being disposed in said grooves;

23. In a Window screen, a pair of rectangular overlapping screen sections having an upper rail of less thickness than the side rails thereof, a sheet of reticulated material secured to said frames on the outwardly directed sides thereof and having itsupper end spaced from the upper rails thereof to provide a fly exit the upper and lower rails of the outer section each having a pair of spaced parallel grooves in its inner face, a plate at tached to each of the rails and having its edges overlying the grooves, a longitudinal member attached to the adjacent face of the lower rail of the other section and having channel shaped members which slidably embrace theedges of the lower plate and a similar longitudinal member extending between said side rails of said other frame and overlapping the upper edge of the reticulated material carried thereby, said member also being formed With channel shaped members which slidably embrace the edges of the plate secured to the upper rail of said first menclosely adjacent each other.

LEWIS F. KOCH. 

